OpenCV 3.0.0 “configure” fails, ffmpeg not downloaded

Question

I get the following error when trying to configure OpenCV using CMAKE on windows:

CMake Warning at cmake/OpenCVUtils.cmake:865 (message):
Download: Local cop         


        

Answer 1

The checksum error happens because it is an issue in the software package and the files might not be there in the directory but openCV will download it in the process, just make sure that you are connected to internet without using VPN or proxy as it will get blocked by the firewall.